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PHYSICS AND MATHEMATICS
Approximation of periodic functions by composite two-point Hermite polynomials
V. V. Shustov State Research Institute of Aviation Systems
Abstract:
This paper deals with polynomial approximating a periodic functions by composite two-point Hermite polynomials. The final formulas of these polynomials, using the function values and its derivatives at a given point, are constructed. The relation of Taylor's polynomial and two-point polynomials with respect to representation of periodic function is specified. The estimation of proximity, expressed through the evaluation of the derivative of the corresponding order is given. A sufficient condition for the convergence of a sequence of two-point polynomials to a given periodic function is established. Examples are given in which periodic function is approximated by a sequence of two-point Hermite polynomials with data on an errors and its evaluation.
Keywords:
periodic functions, two-point Hermite polynomial, approximation error estimate, convergence of two-point polynomials sequence.
Citation:
V. V. Shustov, “Approximation of periodic functions by composite two-point Hermite polynomials”, Meždunar. nauč.-issled. žurn., 2020, no. 5(95), 22–31
Linking options:
https://www.mathnet.ru/eng/irj576 https://www.mathnet.ru/eng/irj/v95/i5/p22
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Abstract page: | 165 | Full-text PDF : | 41 | References: | 20 |
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